List of Spanish films of 2003
A list of Spanish-produced and co-produced feature films released in Spain in 2003. The domestic theatrical release date is favoured.
Box office
The ten highest-grossing Spanish films in 2003, by domestic box office gross revenue, are as follows:| Rank | Title | Distributor | Admissions | Domestic gross |
| 1 | Mortadelo & Filemon: The Big Adventure | Warner Sogefilms | 4,979,991 | 22,827,620.68 |
| 2 | Football Days | Disney | 2,424,949 | 11,617,115.23 |
| 3 | Carmen | Disney | 1,353,848 | 6,299,854.29 |
| 4 | Moscow Gold | Columbia TriStar | 1,259,269 | 5,807,869.17 |
| 5 | The 4th Floor | Disney | 930,970 | 4,492,457.19 |
| 6 | Take My Eyes | Alta Classics | 682,267 | 3,289,523.38 |
| 7 | My Life Without Me | Warner Sogefilms | 530,568 | 2,499,596.66 |
| 8 | South from Granada | Warner Sogefilms | 506,539 | 2,352,662.42 |
| 9 | Mondays in the Sun | Warner Sogefilms | 473,650 | 2,076,250.16 |
| 10 | Soldiers of Salamina | Lolafilms | 424,967 | 2,023,967.75 |